package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
@Slf4j
@Service
public class SetmealServiceImpl implements SetmealService {
@Autowired
private SetmealMapper setmealMapper;
@Autowired
private SetmealDishMapper setmealDishMapper;
@Autowired
private DishMapper dishMapper;
    /**
     * 新增套餐
     * @param setmealDTO
     * @return
     */
@Transactional
    public void addSetmeal(SetmealDTO setmealDTO) {
        Setmeal setmeal=new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.insert(setmeal);
        //获取insert语句生成的主键值
        Long SetmealDishId=setmeal.getId();
        List<SetmealDish> setmealDishes=setmealDTO.getSetmealDishes();
        log.info("打个断点");
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(SetmealDishId);
            });



setmealDishMapper.insertBatch(setmealDishes);
    }


    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page=setmealMapper.pageQuery(setmealPageQueryDTO);
        long total = page.getTotal();

        List<SetmealVO> records = page.getResult();
        log.info(String.valueOf(records));
        log.info("这是分页接口");
        return new PageResult(total,records);
    }

 @Transactional
    public void delete(List<Long> ids) {
      for(Long id:ids){
          Setmeal setmeal=setmealMapper.findStatus(id);
          if (setmeal.getStatus()== StatusConstant.ENABLE){
              throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
          }
      }
      for(Long id:ids){
          // 删除套餐表中的数据
          setmealMapper.deleteById(id);
          //删除套餐菜品关系表中的数据
          setmealMapper.deleteBySetmealId(id);
      }
    }


    public SetmealVO getByIdWithDish(Long id) {
          Setmeal setmeal=setmealMapper.findStatus(id);
          List<SetmealDish> setmealDishes=setmealDishMapper.getBySetmealId(id);
          SetmealVO setmealVO=new SetmealVO();
          BeanUtils.copyProperties(setmeal,setmealVO);
          setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }


    public void update(SetmealDTO setmealDTO) {
         Setmeal setmeal=new Setmeal();
         BeanUtils.copyProperties(setmealDTO,setmeal);
         setmealMapper.update(setmeal);
         Long setmealId=setmealDTO.getId();
         setmealDishMapper.deleteByDishId(setmealId);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
        //3、重新插入套餐和菜品的关联关系，操作setmeal_dish表，执行insert
        setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 套餐起售，停售
     * @param status
     * @param id
     * @return
     */
//起售套餐时，判断套餐内是否有停售菜品，有停售菜品提示"套餐内包含未启售菜品，无法启售
    public void startOrstop(Integer status, Long id) {
        if (status==StatusConstant.ENABLE){
            List<Dish> dishList=dishMapper.getBySetmealId(id);
            if (dishList !=null &&dishList.size()>0){
                dishList.forEach(dish -> {
                    if (StatusConstant.DISABLE==dish.getStatus()){
                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }


        }
        Setmeal setmeal=Setmeal.builder().id(id).status(status).build();
        setmealMapper.update(setmeal);
    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
